Chemiluminescence and free-radical stages of the Belousov-Zhabotinskii reaction

Karavaev, A. D.; Казаков, В. П.

doi:10.1007/bf02069194

Cited by 11 publications

(7 citation statements)

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“…Further, the major effect of stirring on CL of the system bromate–malonic acid–ruthenium complexes with low (10 −5 m ) catalyst concentration corroborates the significant contribution of organic radicals to the oscillation mechanism. Stirring conditions affect the system because of its sensitivity to oxygen, which interacts with the organic free radicals formed by oxidation of malonic acid (16–18). Karavaev's research group also studied deuteration effect in a BZ oscillation CL system (19) and found that substitution of H 2 O by D 2 O in the BZ oscillation CL system catalyzed by Ce(III) or Ru(bpy) 3 2+ not only changed the parameters of oscillations but can also lead to their complete disappearance.…”

Section: Belousov–zhabotinskii–cl Oscillatory Systemsmentioning

confidence: 99%

Expression of Ol‐KIP, a cyclin‐dependent kinase inhibitor, in embryonic and adult medaka (Oryzias latipes) central nervous system

Nguyen

Candal

Sharif

et al. 2001

Developmental Dynamics

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From an expression screen in a fish model, the medaka, we have isolated Ol-KIP (Oryzias latipes-kinase inhibitor protein), a new member of the KIP subfamily of cyclin-dependent kinase (Cdk) inhibitors. We have analysed its expression in the developing and adult brain by in situ hybridization and by double labeling with Ol-KIP mRNA and proliferating cell nuclear antigen (PCNA) antibodies. Ol-KIP presents a complex expression pattern in several areas of the embryonic central nervous system, most often in close vicinity to proliferative neuroepithelia. We studied in great detail its expression in the optic tectum: Ol-KIP is expressed in a ringshaped domain lying exactly between the proliferative and the postmitotic zones of this structure and is, therefore, potentially involved in cell cycle exit. In the adult CNS, Ol-KIP expression persists in numerous nuclei, both close and distant from proliferative ventricular areas. So, Ol-KIP expression is in part compatible with a sustained "stop signal" role for proliferation, but its expression in postmitotic zones suggests that KIP proteins may have late neuronal function(s), in addition to inhibiting Cdks. This first detailed study of the expression profile of a KIP gene in a nonmammalian vertebrate, thus, opens perspectives for analysing the role of these regulators in brain development and function.

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Section: Belousov–zhabotinskii–cl Oscillatory Systemsmentioning

confidence: 99%

Expression of Ol‐KIP, a cyclin‐dependent kinase inhibitor, in embryonic and adult medaka (Oryzias latipes) central nervous system

Nguyen

Candal

Sharif

et al. 2001

Developmental Dynamics

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“…Stirring conditions affect the system because of its sensitivity to oxygen, which interacts with the organic free radicals formed by oxidation of malonic acid (16)(17)(18)). Karavaev's research group also studied deuteration effect in a BZ oscillation CL system (19) and found that substitution of H2O by D2O in the BZ oscillation CL system catalyzed by Ce(III) or Ru(bpy)3 2+ not only changed the parameters of oscillations but can also lead to their complete disappearance.…”

Section: +mentioning

confidence: 99%

Oscillating chemiluminescence systems: state of the art

et al. 2010

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Oscillating chemiluminescence (CL) was reported for the first time about 30 years ago. Since then several systems based on addition of a chemiluminescent reagent to a known oscillator system or based on the light emitting features of one component of the oscillating system, have been described. This information, scattered in the scientific literature, is compiled in the present paper. Several oscillating CL systems, including those based on Belousov-Zhabotinskii and Orban oscillators, or horseradish peroxidase-catalyzed reactions, among others, are critically presented. The application of this type of oscillatory systems is also discussed, in analytical chemistry and for educational purposes.

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“…2,3 Oscillating reactions have so far been analyzed mainly in physico-chemical terms in order to elucidate the complex mechanism involved. Two of the better known oscillating chemical systems are the Belousov-Zhabotinsky (BZ) reaction [4][5][6][7][8][9][10] and the Bray-Liebhafsky reaction. [11][12][13]15 From the available knowledge on these reactions, it follows that the system must be far from thermodynamic equilibrium i.e., DG must be large and negative, which entails using a well stirred continuous-ow reactor (CSTR), 14,[16][17][18] and that one or more autocatalytic or cross-catalytic steps must take place between two steps of the reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%